SECTION 6: RADIANT TUBE AND TAILPIPE

Table 5 for the burner model to ensure that the result- ing tailpipe lengths maintain intended operating char- acteristic.

6.5.5 Damper Couplings

Damper couplings are needed:

In any tailpipe branch that carries less flow units than other tailpipe branches connected to the same pump

In unsymmetrical layouts with branches having the same number of flow units, the damper cou- pling is placed in every branch except for the longest branch.

The purpose of the damper coupling is to adjust the end vent vacuum down to the desired level. These are to be placed in the tailpipe section and not the radiant branch. The recommended location is before the first tee fitting or 10'-40' from the end of the radiant pipe. See Page 20, Figure 17; Page 23, Figure 21, Page 24, Figure 25, and Page 25, Figure 26 for placement examples.

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Roberts Gorden CRV-B-6, CRV-B-8, CRV-B-2, CRV-B-4 service manual Damper Couplings

CRV-B-4, CRV-B-2, CRV-B-6, CRV-B-8 specifications

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